From WordNet (r) 3.0 (2006) [wn]:
pong
n 1: an unpleasant smell [syn: niff, pong]
From The Free On-line Dictionary of Computing (8 July 2008) [foldoc]:
Pong
<games> A computer game invented in 1972 by Atari's Nolan
Bushnell. The game is a minimalist rendering of table tennis.
Each of the two players are represented as a white slab,
controllable by a knob, which deflects a bouncing ball. The
goal of the game is to "AVOID MISSING BALL FOR HIGH SCORE".
{Yahoo
(http://yahoo.com/Recreation/Games/Video_Games/Classic_Arcade_Games/Titles/Pong/)}.
(1997-11-23)